Ski pedestal for aeroplanes



April 1, 1930. s. A. CHEESMAN SKI PEDESTAL FOR AEROPLANES Filed May 29, 1929 Silas l1 .C/Iee Sm amm ig "Patented. Apr. 1, "1930 UNITED STATES PATENT oFFic-E srnas a cnnnsman, or wmmrno, MANITOBA, CANADA, assrenon 'ro NORTHERN AERIAL mmnms nxrnonarron mn, on :rononro, on'rnmo, CANADA SKI PEDESTAL FOR AEBOPLANES Application filed May 28,

The principal objects of the invention are provide an extremely resilient support for the under carriage of an aeroplane which will effectively relieve the undercarriage and fuselage from the sudden shocks of landing.

A further and important object is to provide a resilient support which will not be detrimentally affected by change of temperature and still further to rovide a light but remarkably sturdy'an simple form of structure for connecting the ski runners to the undercarriage struts which will effectively hold the skis in proper alignment. 7

The principal feature of the invention c onsists in the'novel construction and arrangement of a pedestal in the form of a light hollow casing whereby the ski runner is rigidly reinforced for a considerable portion of its length and provides a long bearing support for the ski on the strut and also housesa strong and'relia'ble elastic suspension for'the end of the strut.

In the drawings, Figure 1 is'a side elevation of my improved pedestal.

Figure 2 is a vertical cross section through the pedestal taken on the line 2-2 of Figure 1. 7

Figure 3 is a vertical section through the line 3-3 of Figure 2..

Figure/iris a small perspective view of a ski runner with the pedestal mounted thereon.

In the construction herein illustrated the pedestal 1 is in the form of a hollow casin the base of which is a flan e 2 of an elongate oval shapehaving straight convergent sides 3. The metal of the casing rises in an abrupt angle at the larger rounded end 4 and tapers inwardly to the top and slopes at a.

longer angle from the smaller end 5 of the base and thus forms a light but extremely strong pedestal structure. Thejflange'Iis adapted to be bolted securely to the ski runner 6.

In the side wallsof thecasin there are formed a pair of vertical flange orifices 7, the edge walls 8 of which are of greater thickness than the body of the casing and have parallel sides which form the guides for a cylindrical metal sleeve 9 extending across the 1929. Serial No. 367,058.

casing and which encircles the end 10 of the tubular strut 11 of the under carriage of the portion of the casing and extends across said casing centrally of the width of the guide openings.

A plurality of endless elastic rubber bands 18 are suspended on the tube 17 and extend downwardly and support the sleeve 9 and. strut end 10. These bands may be substituted by a single length of elastic cord ha' ving theends secured together. The number and strength of the ela's'ticsupport members 18 will be such as to normally support the weight of the aeroplane with the strut held snugly against the bumper blocks 19 arranged at the top of the guide slots. Bumper blocks 210 are arranged at the bottom of the guide s ots.

When the aeroplane is landin the skis strike the snow and the impact 1s relieved by the stretching of the elastic supports which allow the strutsto slide in the vertical guides in the pedestal. It will be readily appreciated, that the resilience of the elastic supports will absorb the shock and thus relieve the undercarriage and the body of the plane from the effect of the impact. Y

The vertical guides in the casing being spaced apart a substantial distance hold the skis to true alignment and the skis will tilt freely on the struts as said struts have 9. r0-

vt'atable bearing in the sleeves 9.

lid

u e attachment of the runners and said runners are very effectively reinforced, further the rounded and tapering shape of the pedestal offers the minimum of Wind resistance.

What I claim as my invention is 1. A ski pedestal for aeroplanes comprisa metal casing having a flanged base to to the ski runner, and elastic means led in pedestal for supporting the aero- A ski pedestal for aeroplanes comprising a metal casing having a flanged base to a sure to the ski runner and, vertical guides, and elastic means mounted in said pedestal for supporting the areoplane.

3. A ski pedestal for aeroplanes comprisg a metal casing having a flanged base to cure to the ski runner, and a pair of vertical "wisin the side Walls forming guides for the .nplane struts.

i. In a ski pedestal. the combination with the aeroplane struts, of a metal casing adapted to be secured to a ski runner. and having a pair of vertical slots forming guides to receive and engage the strut end, and an elastic suspension supported within the casing and wispending the strut end.

n In a ski pedestal the combination with th aeroplane struts, of a metal casing adapte; to be secured to a ski runner, and having a pair of vertical slots forming guides to receive and engage the strut end. a support extending across the casing centrally above said guide slots, and elastic loops extending over said support and under said trui.

6. In a: ski pedestal the combination with the aeroplane struts, of a metal casing adapted to be secured to a ski runner, and having a pair of vertical slotsv forming guides to re ceive and engage the strut end, a sleeve r0- tatively encircling. the strut end and slidably engaging the side walls of the uide slots, flanges encircling said sleeve eit ier side of said slots, a rig'd support extending across said casing above said slots, and loops of elastie material suspended on said cross member and extending under said sleeve and suspend c ing the strut.

7'. In a ski pedestalthe combination withthe aeroplane strut-s, of a metal casing adapted to be secured to a ski runner, and having a pair of vertical slots forming guides to receive and engage the strut end, a rigid cross member arranged above said slots in said pedestal,

a plurality of loops of elastic material supported by said cross member and supporting said strut, and resilient bumpers at either end of said slots.

8. A ski pedestal for aeroplanes comprising a metal casing having a flanged base of substantially oval shape, said casing rising from said base in tapering form and having vertical guide slots arranged oppositely in the sides adapted to receive extensions from riage.

SILAS 1L. CHEESMAN. 

